1. Heterogeneity, omitted variable bias, and duration dependence;Chamberlain,1985
2. Duration Dependence and Timevarying Variables in Discrete Time Duration Models;d’Addio,2006
3. de Finetti’s theorem for Markov chains;Diaconis;The Annals of Probability,1980
4. Testing the mixture of exponentials hypothesis and estimating the mixing distribution by the methods of moments;Heckman;Journal of the American Statistical Association,1990
5. Social science duration analysis;Heckman,1985